This report basically discusses the overall element of the project which is entitled,
Optimization of the Feldspar Usage in High Temperature Drilling Fluid. This research
will be a stepping stone for future research of the new potential drilling fluid additives
which is obtained from abundant local resources. The objectives of the project are to
discover the properties and characteristics of quartzo-feldspathic rock, to discover the
effect of feldspar addition on the drilling fluid properties and to determine the effect of
formulated drilling fluid in high temperature and high pressure well condition. In order
to correlate cost and effectiveness of the additive, the natural sources of additive
(feldspar) which found abundant in Malaysia is determined its potential. In drilling
process, drilling fluid could alter in situ formation. In the operation main problem with
drilling fluids and additives are concerned on the effect of the drilling fluid log
interpretation and on cuttings analysis. Minimizing the environmental impact of a
drilling operation as well as safety considerations both directly affect the choice of
drilling fluid additives and drilling fluid systems. The methodology of the project is
kept with relevancy of current technology. The rock properties identification are using
SEM and XRD. Meanwhile, the drilling fluid properties are identified using viscometer,
HPHT viscometer and HPHT filter press. The project met its objective, and as a result,
feldspar could be used as a loss circulation material additive as it shows a good result in
filtration test
